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A system of unequal thickness interference filters with quarter wavelength stack which consists of a spacer surrounded by two multilayer stacks is designed, and the examples of the filter design are given. This kind of filters are not only characterized by high-transparency, but also by high - reflection ,therefore , it is superior to the common equal thickness interference system with quarter wavelength . it is easier to control the manufacturing techniques of the new design as compared with that of interference filter of non- quarter wavelength.
A system of unequal thickness interference filters with quarter wavelength stack which consists of a spacer surrounded by two multilayer stacks is designed, and the examples of the filter design are given. This kind of filters are not only characterized by high-transparency, but also by high - reflection, therefore, it is superior to the common equal thickness interference system with quarter wavelength. it is easier to control the manufacturing techniques of the new design as compared with that of interference filter of non- quarter wavelength.